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- Title
How does bimaxillary orthognathic surgery change dimensions of maxillary sinuses and pharyngeal airway space?
- Authors
Bin, Luiza Roberta; Filho, Liogi Iwaki; Yamashita, Amanda Lury; de Souza Pinto, Gustavo Nascimento; Mendes, Rui Amaral; Ramos, Adilson Luiz; dos Santos Previdelli, Isolde Terezinha; Iwaki, Lilian Cristina Vessoni
- Abstract
To assess changes in the maxillary sinus (MS) and pharyngeal airway space (PAS) after bimaxillary orthognathic surgery using cone-beam computed tomography (CBCT). The CBCT scans of 48 patients were divided into two groups: group 1: maxillary advancement and mandibular setback (n = 24); group 2: maxillomandibular advancement (n = 24). The CBCTs were acquired 1 to 2 months preoperatively and 6 to 8 months postoperatively. A kappa test was used to determine intra- and interexaminer agreement. Area, volume, and linear measurements of MSs and PASs obtained before and after surgery were compared using a mixed model (P <.05). All variables of the MS showed significant postsurgical reductions in both groups, except the MS length, which showed a significant increase in group 2. Volume and minimum axial area of PAS showed statistically significant postsurgical increases in both groups (P <.05). Despite the reduction in the MS and the increase in the PAS, results indicated that the airway was not negatively affected after maxillomandibular advancement and maxillary advancement with mandibular setback.
- Subjects
ORTHOGNATHIC surgery; MAXILLARY sinus; CONE beam computed tomography; LENGTH measurement
- Publication
Angle Orthodontist, 2020, Vol 90, Issue 5, p715
- ISSN
0003-3219
- Publication type
Article
- DOI
10.2319/120919-782.1